+private:
+ static void set_distances_for_loose_col (Grob *me, Grob *c, Drul_array<Item *> next_door, Spacing_options const *);
+ static void generate_pair_spacing (Grob *me,
+ Paper_column *l, Paper_column *r,
+ Paper_column *nextr,
+ Spacing_options const *options);
+ static Real default_bar_spacing (Grob *, Grob *, Grob *, Moment);
+ static Rational effective_shortest_duration (Grob *me, vector<Grob *> const &all);
+ static void breakable_column_spacing (Grob *, Item *l, Item *r, Spacing_options const *);
+ static void prune_loose_columns (Grob *, vector<Grob *> *cols, Spacing_options *);
+ static void set_explicit_neighbor_columns (vector<Grob *> const &cols);
+ static void set_implicit_neighbor_columns (vector<Grob *> const &cols);
+ static void generate_springs (Grob *me, vector<Grob *> const &cols, Spacing_options const *);
+ static void musical_column_spacing (Grob *, Item *, Item *, Spacing_options const *);
+ static bool fills_measure (Grob *, Item *, Item *);